| A C Kings Energy Efficient INC | Oscar Antonio Ramos Reyes | — | (818) 365 8822 | HVAC | Panorama City · Los Angeles County | — | — |
| A C L Construction Company | Jian Jun Wang | — | (909) 576 9535 | Electricians | Rowland Heights · Los Angeles County | — | — |
| A C Landscaping LLC | Dominguez Alejandro Ceron | — | (661) 312 4948 | Windows, patio, painters | Newhall · Los Angeles County | — | — |
| A C M D | A C M D | — | (818) 200 8858 | HVAC | Granada Hills · Los Angeles County | — | — |
| A C Marble & Granite & Tile | Cortez Alfred | — | (818) 317 5391 | GC, remodel, ADU | Burbank · Los Angeles County | — | — |
| A C N Tile Design | A C N Tile Design | — | (818) 383 3348 | Other | Reseda · Los Angeles County | — | — |
| A C Overhead Garage Door Company | Anthony Scott Robinson | — | (661) 944 9333 | Other | Palmdale · Los Angeles County | — | — |
| A C P California Tint | A C P California Tint | — | (818) 438 7019 | Other | Burbank · Los Angeles County | — | — |
| A C Painting | A C Painting | — | (818) 378 7514 | Windows, patio, painters | West Hills · Los Angeles County | — | — |
| A C Paving Company | Anthony Joseph Curato | — | (562) 665 1395 | Other | Whittier · Los Angeles County | — | — |
| A C Power Electric | Jorge Antonio Osorio | — | (562) 457 7006 | HVAC | Maywood · Los Angeles County | — | — |
| A C R Professional Plumbing | A C R Professional Plumbing | — | (323) 873 4974 | Other | Los Angeles · Los Angeles County | — | — |
| A C S Enterprises INC | Wayne Douglas Kochanek | — | (909) 595 3484 | GC, remodel, ADU | Walnut · Los Angeles County | — | — |
| A C Squared Company | Papademetropoulos Lazaros | — | (310) 804 8999 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| A C Tech Construction | Albert Salvador Corado | — | (818) 799 4200 | GC, remodel, ADU | Santa Clarita · Los Angeles County | — | — |
| A Cabral Roofing Group (crg) | Cabral Armando | — | (562) 869 4994 | Other roofers | Downey · Los Angeles County | — | — |
| A Calhoun Roofing Company | Richard Andrew Calhoun | — | (323) 755 2100 | Other roofers | Lakewood · Los Angeles County | — | — |
| A Careaga Plumbing | A Careaga Plumbing | — | (818) 612 2509 | Other | Burbank · Los Angeles County | — | — |
| A Cervantes Landscaping | Vital Adrian Cervantes | — | (424) 571 1864 | Windows, patio, painters | Gardena · Los Angeles County | — | — |
| A Clas Builders & Design INC | Samuel Malmazada | — | (310) 261 4500 | GC, remodel, ADU | Calabasas · Los Angeles County | — | — |
| A Class Plumbing Corp | Levon Gevorkovich Avoyan | — | (818) 237 0720 | Other | Sun Valley · Los Angeles County | — | — |
| A Construction Group INC | Amir Hasson | — | (818) 888 5667 | GC, remodel, ADU | West Hills · Los Angeles County | — | — |
| A Cool Services INC | Ronen Mihael Smelchanskiy | — | (818) 881 4126 | HVAC | West Hills · Los Angeles County | — | — |
| A Craft Plumbing INC | Artur Oliver Gukasi | — | (818) 721 7543 | Other | Burbank · Los Angeles County | — | — |
| A Cut Above Building & Developing INC | Julia Louise Dowell | — | (626) 665 3016 | GC, remodel, ADU | Irwindale · Los Angeles County | — | — |
| A Cut Above Fine Woodworking & General Construction | Naimiivali Soheyl | — | (818) 836 2744 | GC, remodel, ADU | Northridge · Los Angeles County | — | — |
| A Cut Above Roofers | Cyril Ofir Attali | — | (818) 646 9884 | Other roofers | Canoga Park · Los Angeles County | — | — |
| A D A S Construction | Alberto Mario Cardona | — | (818) 406 0665 | GC, remodel, ADU | West Hills · Los Angeles County | — | — |
| A D B Construction INC | Tamir Shvadron | — | (424) 944 0475 | GC, remodel, ADU | Valley Village · Los Angeles County | — | — |
| A D B Electrical | Bruce Edward Hunt | — | (626) 833 9708 | Electricians | Glendora · Los Angeles County | — | — |
| A D Bionki INC | Reza Bionki | — | (909) 740 4056 | Other | Pomona · Los Angeles County | — | — |
| A D Builders INC | Alberto Diaz | — | (747) 246 4268 | GC, remodel, ADU | Sylmar · Los Angeles County | — | — |
| A D C | A D C | — | (626) 407 5550 | Other | Sunland · Los Angeles County | — | — |
| A D Construction | Jose Adrian Diaz | — | (310) 422 4290 | GC, remodel, ADU | Harbor City · Los Angeles County | — | — |
| A D Construction Co | Ramirez Adrian | — | (626) 587 7539 | GC, remodel, ADU | Baldwin Park · Los Angeles County | — | — |
| A D D Drywall INC | Andres Diaz | — | (818) 744 4526 | Other | Van Nuys · Los Angeles County | — | — |
| A D E C INC | Stallmach Harry | — | (310) 540 6399 | Electricians | Torrance · Los Angeles County | — | — |
| A D Electric | De La Torre Aaron | — | (310) 729 7082 | Electricians | Los Angeles · Los Angeles County | — | — |
| A D Electric Voice And Data | Robert John Preciado | — | (562) 293 7909 | Electricians | Long Beach · Los Angeles County | — | — |
| A D G Construction And Roofing | David Swisa | — | (310) 436 5094 | Other roofers | Tarzana · Los Angeles County | — | — |